Flanges Manufacturer
At Steel Icon Stainless Pvt. Ltd., we are a leading manufacturer and supplier of flanges in India, offering a wide range of precision-engineered flanges, including weld neck, slip-on, blind, socket weld, and threaded flanges. Our products comply with international standards such as ASTM, ASME, ANSI, DIN, and EN, ensuring high performance and reliability
What are Flanges?
Flanges are critical components used to connect, reinforce, and seal piping systems, ensuring secure and leak-proof joints in various industrial applications. Manufactured from high-quality alloys, these flanges provide exceptional strength, corrosion resistance, and durability, making them ideal for oil & gas, petrochemical, power plants, construction, and marine industries.
| Products |
|---|
|
Stainless Steel Bar |
|
Fasteners |
|
Forged Products |
|
Flanges |
|
Forged Fittings |
|
Stainless Steel Billets |
|
Round Corner Square Billets |
|
Stainless Steel Pipes |
|
Pipe Fittings |
|
Valve |
Flanges Specifications
| Property | Specification |
|---|---|
|
Material Grades |
SS 304, SS 316, SS 321, SS 410, SS 430
|
|
Size Range |
½” to 48” |
|
Types |
Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice |
|
Pressure Ratings |
150#, 300#, 600#, 900#, 1500#, 2500# |
|
Surface Finish |
Polished, Machined, Rust-Proof Coated |
|
Tensile Strength |
515 MPa – 620 MPa |
|
Hardness |
80 HRB |
|
Standards & Compliance |
ASTM A182, ASME SA182, ANSI B16.5, EN 1092, DIN 2573 |
Types of Flanges
We manufacture and supply a wide variety of flanges, designed for different piping applications:
- Weld Neck Flanges – Provides high strength and reduces stress concentration in high-pressure pipelines.
- Slip-On Flanges – Easy to install and commonly used in low-pressure fluid transport systems.
- Blind Flanges – Used to seal the ends of piping systems, ensuring no leakage or fluid loss.
- Socket Weld Flanges – Ideal for small-diameter and high-pressure piping systems.
- Threaded Flanges – Allows for quick installation without welding.
- Lap Joint Flanges – Suitable for systems that require frequent disassembly and inspection.
Flanges Equivalent Grades
| Grade | UNS | EN / WNR |
|---|---|---|
|
SS 304 |
S30400 |
1.4301 / X5CrNi18-10 |
|
SS 316 |
S31600 |
1.4401 / X5CrNiMo17-12-2 |
|
SS 321 |
S32100 |
1.4541 / X6CrNiTi18-10 |
|
SS 410 |
S41000 |
1.4006 / X12Cr13 |
|
SS 430 |
S43000 |
1.4016 / X6Cr17 |
Flanges Chemical Composition
| Element | SS 304 (%) | SS 316 (%) | SS 321 (%) |
|---|---|---|---|
|
Carbon (C) |
0.08 max |
0.08 max |
0.08 max |
|
Manganese (Mn) |
2.00 max |
2.00 max |
2.00 max |
|
Silicon (Si) |
1.00 max |
1.00 max |
1.00 max |
|
Chromium (Cr) |
18.0 – 20.0 |
16.0 – 18.0 |
17.0 – 19.0 |
|
Nickel (Ni) |
8.0 – 10.5 |
10.0 – 14.0 |
9.0 – 12.0 |
|
Molybdenum (Mo) |
— |
2.00 – 3.00 |
— |
Flanges Mechanical Properties
| Property | SS 304 | SS 316 | SS 321 |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 – 620
|
515 – 620
|
515 – 620
|
|
Yield Strength (MPa) |
205 min |
205 min |
205 min |
|
Elongation (%) |
40 min |
40 min |
40 min |
|
Hardness (HRB) |
80 max
|
80 max
|
80 max
|
Applications of Flanges
Construction &
Infrastructure
Marine &
Offshore
Automotive &
Transportation
Manufacturing &
Heavy Equipment
Chemical &
Pharmaceutical Plants
Oil & Gas
Food & Beverage
Industry
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
What are the most commonly used flange grades?
The most common grades include SS 304, SS 316, SS 321, SS 410, and SS 430, each offering different strength and corrosion resistance properties.
Can flanges be customized in size and pressure ratings?
Yes! We offer custom diameters, pressure ratings, and surface coatings to match project requirements.
Are your flanges corrosion-resistant?
Yes, SS 316 flanges are highly resistant to seawater, chemicals, and extreme environments.
Do you provide quality certification for flanges?
Absolutely! All our products come with mill test reports, third-party inspection certificates, and compliance documents.
GET IN TOUCH
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